Topic: Help - Strange behaviour with mod_substitute

[andre.fischer]

Hi. I'm running Apache 2.4.18 on RHEL 6.7 as a Reverse Proxy. The reverse proxy works fine. When the substitute command is not used, httpwatch shows 31 requests. One contains a link directly to the backend server and two are bad URLs (https://:/).

I then add the substitute command to replace the backend server URL with the client's URL. That works fine.

Unfortunately, httpwatch now shows only 24 requests. Two of the missing are the bad URLs; and the remaining 5 are for .gifs. More importantly, the application is showing a 'Loading content' message that never goes away.

I'm at a loss as to why using the substitute command would cause these 7 requests to no longer appear. I'm wondering if these missing items are causing the 'Loading content' message.

The code is:

ProxyRequests Off

ProxyPass /CallidusPortal/ http://dmobeo-d18.on.xyz.ca:9117/CallidusPortal/
ProxyPassReverse /CallidusPortal/ http://dmobeo-d18.on.xyz.ca:9117/CallidusPortal/

ProxyPass /TrueProducer-TPRO/ http://dmobeo-d18.xyz.ca:9117/TrueProducer-TPRO/
ProxyPassReverse /TrueProducer-TPRO/ http://dmobeo-d18.xyz.ca:9117/TrueProducer-TPRO/

# Use Substitution to replace backend URLs with the correct client URL

SetOutputFilter SUBSTITUTE
Substitute "s|http://dmobeo-d18.xyz.ca:9117/|https://dev.truechannel.int.xyz.ca:443/|i"
RequestHeader unset Accept-Encoding



Thank you in advance for any help.


Andre Fischer.

[James Blond]

I think you could exclude with another ProxyPass the image folder so the request would go directly to the correct frontend server.